Hello Haijian, I am running Vaadin 14 and using last version 3.0.1, I woul

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Hello Haijian,

I am running Vaadin 14 and using last version 3.0.1, I would like to export a grid in excel.

But all columns of my grid are not always filled. So, I get a nullpointer exception and nothing is filled in the file.

This exception becomes from buildCell method of buildRow(T item) method:
buildCell(propertyDefinition.get().getGetter().apply(item));

How can I solve this problem?

Thank you.

Best regards,

Bénédicte Debruyne